86658401 has 4 divisors (see below), whose sum is σ = 91755972. Its totient is φ = 81560832.

The previous prime is 86658389. The next prime is 86658413. The reversal of 86658401 is 10485668.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (86658389) and next prime (86658413).

It can be written as a sum of positive squares in 2 ways, for example, as 35521600 + 51136801 = 5960^2 + 7151^2 .

It is not a de Polignac number, because 86658401 - 2²² = 82464097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86658421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2548760 + ... + 2548793.

It is an arithmetic number, because the mean of its divisors is an integer number (22938993).

Almost surely, 2^86658401 is an apocalyptic number.

It is an amenable number.

86658401 is a deficient number, since it is larger than the sum of its proper divisors (5097571).

86658401 is a wasteful number, since it uses less digits than its factorization.

86658401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097570.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 86658401 is about 9309.0494144139. The cubic root of 86658401 is about 442.5240622322.

The spelling of 86658401 in words is "eighty-six million, six hundred fifty-eight thousand, four hundred one".